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. G. A. GOODENOUGH.

DAMPER REGULATOR FOR PURNAGBS= No. 386,811. Patented July 31, 1888.

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UNITED STATES PATENT OFFICE.

GEORGE A. GOODENOUGH, OF GREEN POINT, NEW YORK.

DAMPER-REGULATOR FOR FURNACES.

SPECIFICATION forming part of Letters Patent No. 386,811, dated July 31, 1888.

Application filed January 25, 1888. Serial No. 261.856.

To all whom it may concern.-

Be it known that I, GEORGE A. GOODE NOUGH, of Green Point, Kings county, and State of New York, have invented a certain new and useful Improvement in Damper-Regulators for Furnaces, of which the following is a specification.

The present invention is an improvement upon that shown and described in my former Patent No. 377,557, dated February 7, 1888.

I will describe in detail a furnace regulator embodying my improvement, and then point out the novel features in the claim.

In the accompanying drawings, Figure 1- illustrates a vertical section of a damper-regulator embodying my improvement, a portion of a steam-boiler with which said damper-regulator communicates, and a portion of a flue for the escaping products of combustion from the furnace, showing a damper arranged therein. Fig. 2 is a transverse section of certain valve mechanism, taken at the plane of the dotted linemx, Fig. 1. Fig. 3 isa similar view taken on the plane of the dotted line y y, Fig. 1.

Similar letters of reference designate corresponding parts in all the figures.

A designates a cylinder of metal. This cylinder is open at the bottom and is provided with an outwardly-extending flange, a. From the flange a extend projecting portions 0.. The upper end of this cylinder is closed, except as hereinafter described.

B designates a pipe leading from and communicating with a steam-boiler, B, which latter may be of any desired construction. The pipe B communicates by a suitable coupling with a valve-chest,O. XVithin the valve-chest O is arranged a valve, D, adapted to be slid to and fro in the valve-chest. As shown, the valvechest is arranged vertically. The pipe B has a screw-threaded connection with a nozzle, b, on the steam chest. Steam passing through the nozzle enters a steam-space, I), having an open top and closed lower end. The valve D is above thesteam-space I)". As shown, this valve is cylindrical and hollow, having a closed lower end. The upper portion of the metal surrounding the steamspace b constitutes a valve-seat, b', for the valve D at the lower end of the latter. Arranged vertically in the metal surrounding the steamspace b (No model.)

are passages b forsteam. I have shown three such passages. The valve D is raised from its seat by the pressure of steam entering the steam-space I)" from the boiler B. \Vhen the valve is so raised,steam passes from the steam space If into an annular space, I), surrounding the lower portion of the valve D, and from thence passes downwardly through the passages b and into a space, If, in the lower portion of the valve-chest O. The valve D when thus raised will be seated at its upper end against an annular valve-seat, 1)", formed upon the interior of the chest G. Above the valveseat I) is a steamspace, b from which leads a nozzle, 1), communicating with an exhaust, b". The valve D is raised against the resistance of a weighted lever, D, fulcrumcd upon the up per end of a pin or rod, D". This pin or rod passes through a suitable stuffing-box, b in the vaivechcst, and bears centrally at its lower end against the valve D.

Instead of using the weighted lever D and pin or rod D", I may use a spring arranged within the valve-chest and abutting at one end against the upper portion of the valvechest and at the lower end against the valve D. I have shown such an arrangement in dotted outline in Fig. 1. In the circumference of the valve D are formed Vertically extending grooves 1), (shown more clearly in Fig. 2,) the object of which will be more fully explained hereinafter.

The valve-chest is provided upon its lower end with an externally-screW-threadcd nozzle, Z), which engages with a screw-threaded aperture in the upper end of the cylinder A.

It will be seen that when the valve D is raised from its seat I) and against its seat I) steam may pass freely into the cylinder A. When the action of the weighted lever D is sufficient to overcome steam-pressure against the valve D, the latter will be returned to its seat I) and moved away from its seat 1). Steam within the cylinder A may then pass upwardly through the passages b and grooves I) in the valve into the space I) and out at the exhaust If.

The cylinder A is filled or nearly filled with water. I have shown a plug, 11, near the upper end of the cylinder for admitting water to the same.

H designates a piston or plunger extending into the cylinder A, mean the lower extremity thereof. This piston is hollow, as showh, and its upper end is closed by a plug, 8, having a screw-threaded connection with the cylinder.

I designates a rod extending upwardly through the hollow piston H and having a pivotal connection with a lug, 1'', upon the under side of the plug 8. The other end of the rod I is pivotally connected to a lever, J. The lever J is pivotally connected near one end to a rod or post extending from one of the projections a on the flange a. I V

I have shown a chain, 7', secured to and depending from the other of the projections ti on the flange a and connected near its other end with the lever J. This chain prevents a too extended downward movement of the lever J.

The piston H works in a stuffing-box, K, formed in a metal plate, It, secured to the flange a of the cylinder A by bolts or otherwise. Be-

tween the plate k and the flange a of the cyltion. 1 It is shown as provided with a'crank on one side, to which crank is connected a rod, 2, the other end of which rod is connected to the lever J. The damper is normally opena nd is held in such position byaweight, Z, connected with the damper and operating to maintain it in such position in a well-known manner.

When steam pressu re in the boiler increases beyond a desired point, the valve D is forced upwardly, as previously explained, and the steam-pressure is then caused to operateupon the column of water contained in the cylinder A, by which means the piston H will be forced downwardly. The rod I, in connection with the piston, is thereby caused to move the lever J downwardly, causing the rod Z to move the damper to close it. When steam-pressure in the boiler has decreased sufficiently, the valve 1) will return to its normal positionyas previously explained, or, in other words, into a position to admit of theescape of the steam, so as to destroy steam-pressu re in the cylinder A. The weight Z on the damper will rock the damper into an open position, and also elevat'e the lever J and the piston H into a posiand the latter elevated, because in the former case steam-pressure is assisted by. gravity.

What I claim as my invention, and desire to secure by Letters Patent, is-

The combination, with a steam-boiler and a fine for carrying oft products of combustion from a furnace, of a damper arranged in said fine, a lever connected with said damper, a cylinder containing a column of water, a piston in said cylinder connected with said lever, a valve-chest connected with said cylinder above the column of water, a valve in said valve chest, a steam-space at one end of said valve, a passage leading from said steam'space to the cylinder when the valve is moved in one direction, a steam-space communicating with an exhaust at the other end of the valve, a passage communicating with the passage first named and said last-named steam-space when the valve is moved to prevent admission of steam from the boiler to the cylinder, and two seats for the valve arranged at opposite ends of the latter, said valve being held with a yielding pressure against one of its seats by a weight or spring, substantially as specified.

GEORGE A. GOODENOUGH. Witnesses:

D. H. DRIscoLL, MAURICE J. ROAOH. 

